Impirovementjln milk coolers or -heaters



4H. A. HANNUM.

MILK-COOLER on HEATER;

No.174,81-0, Patented March14,1876'.

.Wibzesses 01/? N.PE|'ERS. PHOTO-LITHOGHAPHER, WASHINGTON D C.

To all whom itmay concerns l Be it known tli-at"I-,- HENRYAL- HANfiUM,0f 5 Oazenovia', in'the county ot'Madiso-n andState 1 OfiNGW "York, haveinvented certain newand' "usefulImprovements i'n Milk Pans witlr'attach-1 r eddevices for regulating t-he'tempe'ra-ture ot the 2 milk therein;and-Ido hereby declare-thatthe tbllowi-ng is-a 't'ull, clear, andexactdescription oftth'e same, reference being had toithe' accompanying*drawingfwhich forms part of this? H I 1. "pan,or'hitchdnto notchesor0.x

specification.

Tlns invention consists in'no'vel means and combinations of devicesfor;coolingorheatin'g, I

as required, milk t'or da'iry' purposes, including a system of reverse"coils, whereby an even temperature is secured for the entire body ofmilk in the pan, the cooling or heating surfaces are capable ofadjustment to suit different quantities of milk in the pan, and numerousother facilities are obtained.

In the accompanying drawing, Figure 1 represents a plan of a milk-panwith attached devices for regulating the temperature of the milk. Fig. 2is a partially sectional longitudinal elevation of the same; and Figs. 3and 4, sectional views, upon a larger scale, of certain details.

A is the pan in which the milk is put to have its temperature regulatedas required. B and O are reverse connected coils of pipes arrangedwithin the pan, and through which hot or cold water is circulated, asrequired, to give to the milk its required temperature.

When it is required to cool the milk, cold water, by opening a cock, b,is run from a coldwater reservoir or tank, D, through a hose or metallicflexible connection, E, into the one coil of pipes B, and from thenceback through the reverse coil of pipes C, and out through adischarge-branch provided with a cock, 01.

These reverse coils or zigzag series of pipes B G are arranged inrelation with each other. so that the varying temperatures of the waterin circulating through both sets of pipes, as controlled by thetemperature of the milk, approximate throughout the entire circulationthat is, the coldest water in the pipes B is in proximity to the warmestwater in the pipes U at the one end of the pan, and'vice versa at theopposite end of the latter. This applies whether circulating hot or coldwater through are provided 'with'jsprin gs. or liool-ci Specificationforming part of-Letters Patent No. 1'7 4',-si'o;- 1ata ma 1-4,:1e7e jiapplic j j Fehruary IGISTB;

ii -the milk, and" servesf to give an "even tem- '-perature t o*themi'lk in n ne-ten portions of ftlie pair and throti'gliout;it.j I"Tiresefipipes B and care arrangedloosely in -'tlie pan,' so that theymay bef'adjusted fto any desiredheight therein; according toj thedeptlro-r body of the mi'lk i i the' pan.a To this-end s id'pipes B 0hes e, which bear ag'ain'st the sides'or corners f the projections tthe-pan.

' -The con'n'ections' outside of these; -pipes B G *are made'flexible toprovide for such adj usthientotthe pipesint-he pan, and each of saidpipes is attached to its connections by means of uniolrcouplings, whichadmit of the detachment of the pipe-connections when necessary.

In the'bottom of the pan A there is a stopper, g, which, -when removed,allows the skimmed or sour milk to run out of the'pan into a suitablereceiver, or otherwise.

G is a furnace or heater placed in any desired proximity-to the pan, andprovided with a coil of pipes, H, the two ends of which connect aboveand below, by pipes I J, with a hot-water tank, K. A circulation is thuskept up between'the water in the tank K and the coil of pipes H in thefurnace.

Between the heater G and hot-water tank K I connectthe pipes I and J,respectively, subject to the control of two three-way cocks, M and N,with the coils B and G, by means of tubular connections 0 P, which alsoshould be more or less flexible.

When it is required to heat the milk in order to preserve it, or for thepurpose of making cheese, I first shut the stop-cocks b and d and turnthe three-way cock M, as shown in Fig. 3. This stops the heated waterflowing from the coil H back into the hot-water tank K, but openscommunication, by the connection 0, with the pan-coil B, through whichand the reverse coil O the hot water circulates and escapes through theconnection P back into the coil H. within the heater, when the three-waycock N is turned, as represented in Fig. 4.. The water thus returned isreheated and again circulated through the reverse coils B G, and suchcirculation kept up until the milk in the pan A is sufficiently heated,after the-reverse c oilsito regnlate th' temperature which the cocks MNare turned to shut off communication with the tubular connections 0 andP, to stop circulation in the coils B C, and to restore circulation bythe pipes I and J bctween the coil H of the heater and the tank K. Thehot-water tank'K m ay be used;

for other purposes about the premises, for which purpose said tank isprovided with a draw-01f cock, I. Said tank K may be replenishedfrom thewaste-water after it has been used for cooling the milk, by shutting.the stop-cock d and turning the threeway cocks M and N, so that theescape-water will be discharged into said tank. By means of 1 thethree-way cocks M and N I not only reduce the number of cocks thatotherwise would be necessary, but avoid all possibility of accident by.the bursting of the coil or coilsvin .case both ends thereof were shutoff tight through inadvertence or mistake, inasmuch as, lll whicheverway these three-way cocks are the meeting end of the reverse coils, andallowing the hot water to run from the tank K through the coils andtubing out into the pan until it rises to a suflicient height in thepan, after which it may be allowed to run 011 through the opening in thebottom of the pan.

Instead of the cold-water tank D, a. head of water otherwise obtainedmay be used.

1. The reverse connected coils B 0, made adjustable up or down withinthe pan A'by means of springs or hook-catches e and fixed notches orprojections f, essentially as and for the purpose herein set forth.

2. The combination of the three-way cocks M N, the heater G, and coil H,the hot-water tank K, the pipes I J, the pipes O P, and the coils B 0 inthe pan A, essentially as specified.

3. The combination of the cold-water-supply connection E, the inlet andoutlet hotwater connections 0 P, the reverse pan-coils B O,the heater Gand coil H, the hot-water tank K, the pipes I J, and the three-way cocks,M N, substantially as described.

- HENRY A. HANNUM.

Witnesses:

H. H. UOLTON, S. L. Looms.

